Challenging Chemistry

Challenging Standard Distinctions between Science and Technology: The Case of Preparative Chemistry

Part I presents a quantitative-empirical outline of chemistry, esp. preparative chemistry, concerning its dominant role in today’s science, its dynamics, and its methods and aims. Emphasis is laid on the poietical character of chemistry for which a methodological model is derived. Part II discusses standard distinction between science and technology, from Aristotle (whose theses are reconsidere...

Challenging conventional f-element separation chemistry--reversing uranyl(VI)/lanthanide(III) solvent extraction selectivity.

The water soluble tetradentate Schiff base, N,N'-bis(5-sulfonatosalicylidene)-diaminoethane (H2salen-SO3), will readily coordinate to the uranyl(VI) cation, but not to the same extent to trivalent lanthanide cations. This allows for the reversal of conventional solvent extraction properties and opens the possibility for novel separation processes.

Challenging wisdom

Received: 10 October 2005 Revised: 11 October 2005 Accepted: 11 October 2005 ‘After all, an improviser must anticipate before playing, and composing is a slowed-down improvisation; often, one cannot write fast enough to keep up with the stream of ideas.’ The central part of this sentence from ‘Brahms the Progressive,’ one of Arnold Schoenberg’s most renowned and influential writings (in Style a...

Probiotics: Challenging the Traditional Modes of Action

A trial was conducted to evaluate the performance of broiler birds which supplemented with a commercial inactivated probiotic. Four hundred and fifty day old broiler chickens were allocated into 3 treatments with 6 replicates each. Each replicate was placed on clean wood shavings in floor pens receiving feed and water ad libitum. In treatment 1, feed was supplemented with 500 g/ton of a heat-in...

Nutrition and Food Sciences: Fascinating and Challenging